Suppressive Effect of the n-Hexane Extract of Litsea japonica Fruit Flesh on Monosodium-Iodoacetate-Induced Osteoarthritis in Rats
- Authors
- Kim, Seung-Hyung; Choi, Hye-Jin; Yang, Won-Kyung; Lee, Ji-Eun; Cho, Ju-Hyun; Park, In-Jae; Park, Sunyoung; Park, Bo-Kyung; Jin, Mirim
- Issue Date
- 2017
- Publisher
- HINDAWI LTD
- Citation
- EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE
- Journal Title
- EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7484
- DOI
- 10.1155/2017/1791403
- ISSN
- 1741-427X
- Abstract
- We examined the antiosteoarthritic effect of the n-hexane extract of Litsea japonica fruit flesh (LJF-HE) in a rat model of monosodium-iodoacetate- (MIA-) induced osteoarthritis. LJF-HE significantly reduced the difference in weight-bearing capabilities of the hind paws between healthy and MIA-treated rats. Histological examination of the knee joints indicated that LJF-HE suppressed cartilage and bone destruction. Additionally, there were decreases in the expression of matrix metalloproteinase-2 and metalloproteinase-9 and cyclooxygenase-2 in the joints. The serum levels of deoxypyridinoline (DPD) and osteocalcin, which are markers of bone metabolism, also decreased. Furthermore, LJF-HE significantly suppressed infiltration of inflammatory cells into the synovium and inhibited the expression of proinflammatory cytokines such as tumor necrosis factor-(TNF-) alpha, interleukin-(IL-)1, and IL-6 in the joints and serum. The serum levels of leukotriene B4 and lipoxygenase were also significantly lowered by LJF-HE. Finally, LJF-HE inhibited the production of nitric oxide, prostaglandin E2, IL-6, and TNF-alpha in lipopolysaccharide-activated macrophages, which might be associated with inhibited phosphorylation of p38 mitogen-activated protein kinase and c-Jun N-terminal kinase. Our data suggest that LJF-HE has an anti-inflammatory effect and may have potential as an antiosteoarthritic agent.
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